From c19ef051798ee9b6bfb18012fa0b0335b554160d Mon Sep 17 00:00:00 2001
From: zhujiale <945386260@qq.com>
Date: Wed, 21 Aug 2024 13:40:50 +0800
Subject: [PATCH 1/4] fix_return

---
 components/dfs/dfs_v2/src/dfs.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/components/dfs/dfs_v2/src/dfs.c b/components/dfs/dfs_v2/src/dfs.c
index 939e4dd66ef..f0d0f394c2f 100644
--- a/components/dfs/dfs_v2/src/dfs.c
+++ b/components/dfs/dfs_v2/src/dfs.c
@@ -537,6 +537,7 @@ int dfs_dup(int oldfd, int startfd)
     fdt = dfs_fdtable_get();
     if ((oldfd < 0) || (oldfd >= fdt->maxfd))
     {
+        rt_set_errno(-EBADF);
         goto exit;
     }
     if (!fdt->fds[oldfd])
@@ -668,12 +669,17 @@ sysret_t sys_dup(int oldfd)
 int sys_dup(int oldfd)
 #endif
 {
+    int err = 0;
     int newfd = dfs_dup(oldfd, (dfs_fdtable_get() == &_fdtab) ? DFS_STDIO_OFFSET : 0);
+    if(newfd < 0)
+    {
+        err = GET_ERRNO();
+    }
 
 #ifdef RT_USING_SMART
-    return (sysret_t)newfd;
+    return err < 0?err : newfd;
 #else
-    return newfd;
+    return err < 0?err : newfd;
 #endif
 }
 

From b401cb4089cd9a61f8d69e17555f2f011e651423 Mon Sep 17 00:00:00 2001
From: zhujiale <945386260@qq.com>
Date: Wed, 21 Aug 2024 14:18:53 +0800
Subject: [PATCH 2/4] fix

---
 components/dfs/dfs_v2/src/dfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/dfs/dfs_v2/src/dfs.c b/components/dfs/dfs_v2/src/dfs.c
index f0d0f394c2f..153686a5f09 100644
--- a/components/dfs/dfs_v2/src/dfs.c
+++ b/components/dfs/dfs_v2/src/dfs.c
@@ -673,7 +673,7 @@ int sys_dup(int oldfd)
     int newfd = dfs_dup(oldfd, (dfs_fdtable_get() == &_fdtab) ? DFS_STDIO_OFFSET : 0);
     if(newfd < 0)
     {
-        err = GET_ERRNO();
+        err = rt_get_errno();
     }
 
 #ifdef RT_USING_SMART

From d5c5d5901a4905e6c3269ea825bd581670982dca Mon Sep 17 00:00:00 2001
From: zhuzhuzhu <945386260@qq.com>
Date: Sun, 25 Aug 2024 16:10:38 +0800
Subject: [PATCH 3/4] Update components/dfs/dfs_v2/src/dfs.c

Co-authored-by: Meco Man <920369182@qq.com>
---
 components/dfs/dfs_v2/src/dfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/dfs/dfs_v2/src/dfs.c b/components/dfs/dfs_v2/src/dfs.c
index 153686a5f09..a0881a6eab8 100644
--- a/components/dfs/dfs_v2/src/dfs.c
+++ b/components/dfs/dfs_v2/src/dfs.c
@@ -677,7 +677,7 @@ int sys_dup(int oldfd)
     }
 
 #ifdef RT_USING_SMART
-    return err < 0?err : newfd;
+    return err < 0 ? err : newfd;
 #else
     return err < 0?err : newfd;
 #endif

From 6faf212367d955f6f20c7528fdb9faf69f831c0a Mon Sep 17 00:00:00 2001
From: zhuzhuzhu <945386260@qq.com>
Date: Sun, 25 Aug 2024 16:13:11 +0800
Subject: [PATCH 4/4] Update components/dfs/dfs_v2/src/dfs.c

Co-authored-by: Meco Man <920369182@qq.com>
---
 components/dfs/dfs_v2/src/dfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/dfs/dfs_v2/src/dfs.c b/components/dfs/dfs_v2/src/dfs.c
index a0881a6eab8..527ba896271 100644
--- a/components/dfs/dfs_v2/src/dfs.c
+++ b/components/dfs/dfs_v2/src/dfs.c
@@ -679,7 +679,7 @@ int sys_dup(int oldfd)
 #ifdef RT_USING_SMART
     return err < 0 ? err : newfd;
 #else
-    return err < 0?err : newfd;
+    return err < 0 ? err : newfd;
 #endif
 }